{"id":3571,"date":"2026-08-08T15:23:36","date_gmt":"2026-08-08T15:23:36","guid":{"rendered":"https:\/\/huyuglobal.com\/?p=3571"},"modified":"2026-08-08T15:23:38","modified_gmt":"2026-08-08T15:23:38","slug":"which-type-of-circuit-breaker-is-designed-to-be-reconditioned","status":"publish","type":"post","link":"https:\/\/huyuglobal.com\/pt\/blog\/which-type-of-circuit-breaker-is-designed-to-be-reconditioned\/","title":{"rendered":"Qual Tipo de Disjuntor \u00c9 Projetado Para Ser Recondicionado?"},"content":{"rendered":"<p>Caso sua instala\u00e7\u00e3o utilize equipamentos de manobra obsoletos, voc\u00ea pode se perguntar se \u00e9 poss\u00edvel reformar seus disjuntores ou se deve adquirir dispositivos novos. A resposta n\u00e3o \u00e9 t\u00e3o simples, pois depende do tipo de disjuntor presente em sua instala\u00e7\u00e3o. Conforme estabelecido pelo National Electrical Code (NEC) de 2020, disjuntores de baixa tens\u00e3o, disjuntores de m\u00e9dia tens\u00e3o e disjuntores de alta tens\u00e3o podem ser restaurados, enquanto disjuntores em caixa moldada (MCCBs), disjuntores GFCI e disjuntores AFCI n\u00e3o devem ser renovados segundo o Artigo 210.15 e a Se\u00e7\u00e3o 240.88 do NEC. Consequentemente, essa distin\u00e7\u00e3o \u00e9 muito importante para gerentes de plantas, empreiteiros el\u00e9tricos e engenheiros de manuten\u00e7\u00e3o que precisam equilibrar custos com seguran\u00e7a e conformidade com o c\u00f3digo.<\/p>\n<blockquote><p><strong>Resposta r\u00e1pida:<\/strong> Os disjuntores que podem ser reformados incluem disjuntores de baixa tens\u00e3o, disjuntores de m\u00e9dia tens\u00e3o e disjuntores de alta tens\u00e3o. Disjuntores em caixa moldada n\u00e3o podem ser reformados conforme o NEC 240.88(A)(1), e qualquer disjuntor que forne\u00e7a prote\u00e7\u00e3o GFCI, prote\u00e7\u00e3o AFCI ou GFPE \u00e9 proibido pelo NEC 210.15. Fabricantes not\u00e1veis que oferecem reforma em f\u00e1brica incluem: Eaton, ABB e Schneider Electric \/ Square D. O processo de reforma est\u00e1 em conformidade com as normas IEEE C37.59 e NEMA AB 4. Geralmente, o custo da reforma corresponde a 40-60% do custo de um disjuntor novo e adiciona 10-20 anos de vida \u00fatil.<\/p><\/blockquote>\n<h2>Tipos de Disjuntores Permitidos para Recondicionamento<\/h2>\n<p>Conforme a Se\u00e7\u00e3o 240.88(A) do NEC 2020, os seguintes <strong>tipos de disjuntores<\/strong> s\u00e3o explicitamente permitidos para recondicionamento:<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3573\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/08\/Circuit-Breaker-Types-Permitted-for-Reconditioning.webp\" alt=\"Tipos de Disjuntores Permitidos para Recondicionamento\" width=\"1448\" height=\"1086\" \/><\/p>\n<table>\n<thead>\n<tr>\n<th>Tipo de Disjuntor<\/th>\n<th>Refer\u00eancia NEC<\/th>\n<th>Aplica\u00e7\u00e3o T\u00edpica<\/th>\n<th>Faixa de Tens\u00e3o<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Disjuntores de baixa tens\u00e3o<\/strong><\/td>\n<td>88(A)(2)<\/td>\n<td>Disjuntores extra\u00edveis em equipamentos de manobra, disjuntores principais de servi\u00e7o<\/td>\n<td>At\u00e9 1.000V CA<\/td>\n<\/tr>\n<tr>\n<td><strong>Disjuntores de m\u00e9dia tens\u00e3o<\/strong><\/td>\n<td>88(A)(3)<\/td>\n<td>Subesta\u00e7\u00f5es industriais, distribui\u00e7\u00e3o em grandes instala\u00e7\u00f5es<\/td>\n<td>000V \u2013 38kV<\/td>\n<\/tr>\n<tr>\n<td><strong>Disjuntores de alta tens\u00e3o<\/strong><\/td>\n<td>88(A)(3)<\/td>\n<td>Subesta\u00e7\u00f5es em escala de utilidade, transmiss\u00e3o<\/td>\n<td>Acima de 38kV<\/td>\n<\/tr>\n<tr>\n<td><strong>Pain\u00e9is de distribui\u00e7\u00e3o e se\u00e7\u00f5es de equipamentos de manobra<\/strong><\/td>\n<td>8(B), 490.49<\/td>\n<td>Moderniza\u00e7\u00e3o completa da linha de equipamentos de manobra<\/td>\n<td>Diversos<\/td>\n<\/tr>\n<tr>\n<td><strong>Rel\u00e9s eletromec\u00e2nicos de prote\u00e7\u00e3o e TC<\/strong><\/td>\n<td>88(B)(2)<\/td>\n<td>Sistemas de prote\u00e7\u00e3o em subesta\u00e7\u00f5es<\/td>\n<td>Diversos<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>A caracter\u00edstica principal compartilhada por todos os <strong>disjuntores recondicion\u00e1veis<\/strong> \u00e9 que eles s\u00e3o <strong>do tipo extra\u00edvel ou remov\u00edvel<\/strong> projetados para manuten\u00e7\u00e3o \u2014 n\u00e3o unidades seladas. Disjuntores de baixa tens\u00e3o, como aqueles usados em <a href=\"https:\/\/huyuglobal.com\/pt\/product\/huw9-690v-6300a-air-circuit-breaker\/\">disjuntores a ar com corrente nominal de at\u00e9 6300A<\/a>, s\u00e3o especificamente projetados com mecanismos que permitem manuten\u00e7\u00e3o em campo, contatos substitu\u00edveis e unidades de disparo acess\u00edveis. Isso \u00e9 fundamentalmente diferente dos disjuntores em caixa moldada, que s\u00e3o selados de f\u00e1brica.<\/p>\n<h3>Por que Disjuntores de Pot\u00eancia Podem Ser Recondicionados<\/h3>\n<p>Disjuntores s\u00e3o projetados para permitir manuten\u00e7\u00e3o. Suas caracter\u00edsticas incluem:<\/p>\n<ul>\n<li>Contatos Substitu\u00edveis \u2013 inspe\u00e7\u00e3o e substitui\u00e7\u00e3o dos contatos de arco e principais podem ser realizadas<\/li>\n<li>Mecanismos Operacionais Acess\u00edveis \u2013 manuten\u00e7\u00e3o pode ser realizada nas molas, articula\u00e7\u00f5es e travas do disjuntor<\/li>\n<li>Unidades de disparo intercambi\u00e1veis \u2013 \u00e9 poss\u00edvel atualizar as unidades eletr\u00f4nicas de disparo dos disjuntores<\/li>\n<li>Design extra\u00edvel \u2013 o disjuntor pode ser removido do painel sem desligar a energia<\/li>\n<li>Sistemas extensivos de isolamento \u2013 o isolamento existente pode ser limpo, testado e reabilitado<\/li>\n<\/ul>\n<p>Para mais informa\u00e7\u00f5es sobre a diferen\u00e7a entre categorias de disjuntores, nosso guia sobre <a href=\"https:\/\/huyuglobal.com\/pt\/blog\/what-is-mccb-and-mcb\/\">o que s\u00e3o MCCB e MCB<\/a> aborda as diferen\u00e7as estruturais que determinam a possibilidade de manuten\u00e7\u00e3o.<\/p>\n<h2 id=\"prohibited-types\">Tipos de Disjuntores Proibidos para Recondicionamento<\/h2>\n<p>De acordo com a NEC 2020, existem itens que s\u00e3o proibidos de serem recondicionados. Essas proibi\u00e7\u00f5es decorrem do fato de que a natureza cr\u00edtica para a seguran\u00e7a deste equipamento torna imperativo que quaisquer altera\u00e7\u00f5es internas afetem suas caracter\u00edsticas de seguran\u00e7a.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3574\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/08\/Circuit-Breaker-Types-Prohibited-from-Reconditioning.webp\" alt=\"Tipos de Disjuntores Proibidos para Recondicionamento\" width=\"1448\" height=\"1086\" \/><\/p>\n<table>\n<thead>\n<tr>\n<th>Equipamento Proibido<\/th>\n<th>Refer\u00eancia NEC<\/th>\n<th>Motivo<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Disjuntores em caixa moldada (MCCBs)<\/strong><\/td>\n<td>88(A)(1)<\/td>\n<td>Selados de f\u00e1brica; romper o selo invalida a certifica\u00e7\u00e3o UL e a calibra\u00e7\u00e3o<\/td>\n<\/tr>\n<tr>\n<td><strong>Dispositivos de prote\u00e7\u00e3o GFCI<\/strong><\/td>\n<td>210.15(1)<\/td>\n<td>Prote\u00e7\u00e3o de pessoal cr\u00edtica para seguran\u00e7a; calibra\u00e7\u00e3o n\u00e3o pode ser verificada ap\u00f3s recondicionamento<\/td>\n<\/tr>\n<tr>\n<td><strong>Dispositivos de prote\u00e7\u00e3o AFCI<\/strong><\/td>\n<td>210.15(2)<\/td>\n<td>Eletr\u00f4nica complexa detecta assinaturas de arco; recondicionamento pode n\u00e3o detectar degrada\u00e7\u00e3o sutil<\/td>\n<\/tr>\n<tr>\n<td><strong>Prote\u00e7\u00e3o contra falha \u00e0 terra de equipamentos (GFPE)<\/strong><\/td>\n<td>210.15(3)<\/td>\n<td>Fun\u00e7\u00e3o de prote\u00e7\u00e3o do equipamento deve permanecer calibrada de f\u00e1brica<\/td>\n<\/tr>\n<tr>\n<td><strong>Unidades eletr\u00f4nicas de disparo para disjuntores de baixa tens\u00e3o<\/strong><\/td>\n<td>88(B)<\/td>\n<td>Eletr\u00f4nica n\u00e3o pode ser recondicionada de forma confi\u00e1vel; deve ser substitu\u00edda por nova<\/td>\n<\/tr>\n<tr>\n<td><strong>Pain\u00e9is de distribui\u00e7\u00e3o<\/strong><\/td>\n<td>8(A)<\/td>\n<td>Integridade estrutural e conex\u00f5es de barramento n\u00e3o podem ser verificadas ap\u00f3s recondicionamento<\/td>\n<\/tr>\n<tr>\n<td><strong>Chaves de transfer\u00eancia (sistemas de emerg\u00eancia)<\/strong><\/td>\n<td>5(C), 701.5(C), 702.5(A)<\/td>\n<td>Aplica\u00e7\u00f5es de seguran\u00e7a de vida requerem equipamento novo<\/td>\n<\/tr>\n<tr>\n<td><strong>Controladores de bombas de inc\u00eandio<\/strong><\/td>\n<td>695.10<\/td>\n<td>Equipamento cr\u00edtico para seguran\u00e7a de vida<\/td>\n<\/tr>\n<tr>\n<td><strong>Tomadas e plugues de conex\u00e3o<\/strong><\/td>\n<td>3(A), 406.7<\/td>\n<td>Desgaste e degrada\u00e7\u00e3o de contato n\u00e3o detect\u00e1veis de forma confi\u00e1vel<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Enfatizando o ponto sobre MCCBs: Mesmo que anteriormente algumas inspe\u00e7\u00f5es e pr\u00e1ticas de manuten\u00e7\u00e3o preventiva fossem permitidas conforme os padr\u00f5es NEMA AB 4, deve-se notar que o recondicionamento de disjuntores moldados foi proibido na \u00faltima edi\u00e7\u00e3o de 2020 do NEC. A manuten\u00e7\u00e3o (limpeza, opera\u00e7\u00e3o, verifica\u00e7\u00e3o de torque) ainda \u00e9 v\u00e1lida, mas qualquer desmontagem da estrutura interna e reconstru\u00e7\u00e3o dos disjuntores moldados n\u00e3o \u00e9 permitida.<\/p>\n<h2>Marcas que suportam recondicionamento de disjuntores<\/h2>\n<p>Diferentes fabricantes renomados gerenciam os programas de recondicionamento autorizados por suas f\u00e1bricas. Eles n\u00e3o utilizam recondicionadores que atuam em nome de outras empresas.<\/p>\n<table>\n<thead>\n<tr>\n<th>Marca<\/th>\n<th>Nome do Programa<\/th>\n<th>Cobertura<\/th>\n<th>Garantia<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Eaton<\/strong><\/td>\n<td>Recondicionamento Classe 1 (Centros de Recondicionamento de Disjuntores de Pot\u00eancia)<\/td>\n<td>Disjuntores Eaton e n\u00e3o-Eaton de baixa\/m\u00e9dia tens\u00e3o; remanufatura Magnum DS; atualiza\u00e7\u00f5es VCP-W FAME<\/td>\n<td>3 anos (1 ano para aplica\u00e7\u00f5es em motor starter)<\/td>\n<\/tr>\n<tr>\n<td><strong>ABB<\/strong><\/td>\n<td>Recondicionamento de Disjuntores em Centro de Servi\u00e7o<\/td>\n<td>Disjuntores ABB e n\u00e3o-ABB; nucleares e n\u00e3o nucleares; baixa e m\u00e9dia tens\u00e3o<\/td>\n<td>1 ano para pe\u00e7as e m\u00e3o de obra<\/td>\n<\/tr>\n<tr>\n<td><strong>Schneider Electric \/ Square D<\/strong><\/td>\n<td>Solu\u00e7\u00f5es de Moderniza\u00e7\u00e3o \/ Recondicionamento de Disjuntores<\/td>\n<td>Square D e a maioria das principais marcas OEM; disjuntores de baixa e m\u00e9dia tens\u00e3o; moderniza\u00e7\u00e3o de pain\u00e9is<\/td>\n<td>Varia conforme o escopo<\/td>\n<\/tr>\n<tr>\n<td><strong>Siemens<\/strong><\/td>\n<td>Programas de Servi\u00e7o e Recondicionamento<\/td>\n<td>Siemens e marcas legadas (ITE, Gould); disjuntores de baixa e m\u00e9dia tens\u00e3o<\/td>\n<td>Varia conforme o programa<\/td>\n<\/tr>\n<tr>\n<td><strong>GE \/ Vertiv<\/strong><\/td>\n<td>Servi\u00e7os de Recondicionamento<\/td>\n<td>Disjuntores GE e marcas legadas; disjuntores de m\u00e9dia e alta tens\u00e3o<\/td>\n<td>Varia conforme o programa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>O que Cada Marca Oferece<\/h3>\n<p>Na regi\u00e3o da Am\u00e9rica do Norte, a Eaton fundou cinco Centros de Recondicionamento de Disjuntores de Pot\u00eancia. Seus protocolos classe 1 incluem desmontagem completa das pe\u00e7as, limpeza conforme padr\u00f5es de componentes, recondicionamento de superf\u00edcies e, finalmente, testes finais de desempenho. Tamb\u00e9m desenvolveram o conceito de atualiza\u00e7\u00e3o FAME para alguns disjuntores de m\u00e9dia tens\u00e3o espec\u00edficos, bem como retrofit de disjuntores com a unidade de disparo Digitrip RMS e o Sistema de Manuten\u00e7\u00e3o para Redu\u00e7\u00e3o de Arco El\u00e9trico (Arcflash Reduction Maintenance System). Cada disjuntor recondicionado \u00e9 adicionado ao banco de dados central Pow-R-DB.<\/p>\n<p>Em seus centros de servi\u00e7o, a ABB oferece servi\u00e7os de reteste tanto para seus pr\u00f3prios modelos de disjuntores quanto para os de outros fabricantes. Seus servi\u00e7os incluem o recebimento do equipamento, inspe\u00e7\u00e3o e teste, e desmontagem. Al\u00e9m de limpar todas as pe\u00e7as, a ABB tamb\u00e9m verificar\u00e1 a exist\u00eancia de trincas, garantir\u00e1 a substitui\u00e7\u00e3o de pe\u00e7as j\u00e1 danificadas, aplicar\u00e1 lubrifica\u00e7\u00e3o em todos os pontos m\u00f3veis e, em seguida, remontar\u00e1 o equipamento.<\/p>\n<p>Em seu programa de Solu\u00e7\u00f5es de Moderniza\u00e7\u00e3o, a Schneider Electric oferece o servi\u00e7o de reconfigura\u00e7\u00e3o de disjuntores de baixa e m\u00e9dia tens\u00e3o. O recondicionamento \u00e9 realizado utilizando as seguintes etapas: por todas as fases, incluindo substitui\u00e7\u00e3o parcial de componentes, lavagem e pintura de detalhes, e lubrifica\u00e7\u00e3o.<\/p>\n<h2>Normas principais: NEC, NEMA AB 4, IEEE C37.59 &amp; UL 489<\/h2>\n<p>M\u00faltiplas normas regem <strong>o recondicionamento de disjuntores<\/strong>. Entender qual se aplica \u00e0 sua situa\u00e7\u00e3o \u00e9 essencial para a conformidade com o c\u00f3digo:<\/p>\n<table>\n<thead>\n<tr>\n<th>Norma<\/th>\n<th>Editor<\/th>\n<th>Escopo<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>NEC Article 210.15 &amp; 240.88<\/strong><\/td>\n<td>NFPA<\/td>\n<td>Defines what can and cannot be reconditioned; requires listing as &#8220;reconditioned&#8221;<\/td>\n<\/tr>\n<tr>\n<td><strong>NEMA AB 4<\/strong><\/td>\n<td>NEMA<\/td>\n<td>Guidelines for inspection and preventive maintenance of molded-case breakers (not reconditioning)<\/td>\n<\/tr>\n<tr>\n<td><strong>IEEE C37.59<\/strong><\/td>\n<td>IEEE<\/td>\n<td>Standard for reconditioning power switchgear equipment; defines the reconditioning process<\/td>\n<\/tr>\n<tr>\n<td><strong>UL 489<\/strong><\/td>\n<td>UL<\/td>\n<td>Standard for molded-case circuit breakers; relevant as a testing benchmark<\/td>\n<\/tr>\n<tr>\n<td><strong>NEMA Policy on Reconditioned Equipment<\/strong><\/td>\n<td>NEMA<\/td>\n<td>Industry positions on suitability and safety of reconditioned equipment<\/td>\n<\/tr>\n<tr>\n<td><strong>PEARL Standards<\/strong><\/td>\n<td>PEARL<\/td>\n<td>ANSI-accredited standards for inspecting, testing, and reconditioning electrical apparatus<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The essential factor: the initial marking must be taken away and the equipment must be identified as reconditioned when it is refurbished. UL provides a certification procedure for reconstructed equipment. The devices renovated in compliance with the procedure are marked with the UL Mark containing the word &#8220;Rebuilt,&#8221; &#8220;Remanufactured,&#8221; &#8220;Rebuilt,&#8221; or &#8220;Reconditioned.&#8221; For more on breaker standards, see our article on <a href=\"https:\/\/huyuglobal.com\/pt\/blog\/what-is-ul-489-breakers\/\">UL 489 breaker requirements<\/a>.<\/p>\n<h2>The Reconditioning Process Step by Step<\/h2>\n<p>According to Eaton Class 1 and IEEE C37.59, this is the process undertaken when the circuit breaker needs reconditioning:<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3575\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/08\/The-Reconditioning-Process-Step-by-Step.webp\" alt=\"The Reconditioning Process Step by Step\" width=\"1448\" height=\"1086\" \/><\/p>\n<h3>Step 1: Incoming Inspection &amp; Testing<\/h3>\n<p>The breaker is received, visually inspected, and tested in the &#8220;as received&#8221; condition to document baseline performance. The important measurements taken include contact resistance (in millivolts) insulation resistance, mechanical operating effort and dimensions. The information obtained is documented.<\/p>\n<h3>Step 2: Complete Disassembly<\/h3>\n<p>The disassembly of the breaker is complete and the breaker has been taken apart into its components including: the operating system, the arc chute, the insulation barrier, frame and other systems. This is the stage where one identifies flaws such as, the faulty drive link, or misaligned contacts, damaged insulation that makes the whole device liable to failure when the fault is detected.<\/p>\n<h3>Step 3: Component-Specific Cleaning<\/h3>\n<p>Various types of materials need various types of cleaning processes. The non-current components are cleaned thoroughly in such a way that no foreign material is left while dielectric and structural characteristics are preserved. The current components are cleaned without damaging the original plating. Contact surfaces are regenerated so that metallurgy and contact pressure play their role properly.<\/p>\n<h3>Step 4: Inspection &amp; Part Replacement<\/h3>\n<p>All parts should be checked for cracks, deterioration, rust, and size accuracy. Parts that have worn out are replaced by new OEM parts, while parts that are not in production anymore will need to be replaced with reverse-engineered components which must comply with standards stated in IEEE C37.59. Such components may require verification in strict laboratory conditions such as examples of high-power testing. The typical substitutes for the worn parts may be springs, contacts, shunts, and bushing.<\/p>\n<h3>Step 5: Re-Lubrication<\/h3>\n<p>All outdated lubricants have been eliminated, and the machine and connection points are relubricated using grease specified by the manufacturer. One of the key reasons that circuit breakers fail is due to inappropriate lubrication \u2014 stiff mechanisms slow down the process of trouble clearing, which results in much higher arc flash incident energy.<\/p>\n<h3>Step 6: Reassembly to OEM Specifications<\/h3>\n<p>In the process of reassembling the breaker, the OEM documentation is utilized. However, if OEM information is not available, for instance if the original manufacturer is defunct, Eaton will instead use the centralized Pow-R-DB database of records from similar breakers that are proven to give desired outcomes.<\/p>\n<h3>Step 7: Final Testing<\/h3>\n<p>The rebuilt circuit breaker will go through conclusive testing as per IEEE and NEMA guidelines including:<\/p>\n<ul>\n<li>Insulation resistance assessment<\/li>\n<li>Contact resistance test (millivolt drop)<\/li>\n<li>Mechanical operation assessment (open-close timing)<\/li>\n<li>Overcurrent trip test (long-time, short-time, instantaneous trip)<\/li>\n<li>Dielectric withstand assessment<\/li>\n<\/ul>\n<h3>Step 8: Documentation &amp; Labeling<\/h3>\n<p>The production of the test report occurs to establish a contrast between &#8220;as received&#8221; and &#8220;final&#8221; test findings, supported by information mentioning all the fixed components. The circuit breaker is provided with a traceability label signifying it as reconditioned, which indicates the name as well as the date of the reconditioning firm. The circuit breaker is operational again.<\/p>\n<h2>When to Choose Reconditioning vs. Replacement<\/h2>\n<p>The decision to recondition or replace depends on breaker type, age, criticality, and cost. Here&#8217;s a practical decision matrix:<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3576\" src=\"https:\/\/huyuglobal.com\/wp-content\/uploads\/2026\/08\/When-to-Choose-Reconditioning-vs-Replacement.webp\" alt=\"When to Choose Reconditioning vs. Replacement\" width=\"1448\" height=\"1086\" \/><\/p>\n<table>\n<thead>\n<tr>\n<th>Scenario<\/th>\n<th>Recommendation<\/th>\n<th>Reasoning<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>LV\/MV power circuit breaker in switchgear, 15\u201330 years old<\/td>\n<td><strong>Recondition<\/strong><\/td>\n<td>Designed for maintenance; OEM parts available; 40\u201360% cheaper than new<\/td>\n<\/tr>\n<tr>\n<td>Power breaker with obsolete trip unit<\/td>\n<td><strong>Recondition + trip upgrade<\/strong><\/td>\n<td>New solid-state trip unit extends life and adds arc-flash reduction features<\/td>\n<\/tr>\n<tr>\n<td>MCCB in panelboard that&#8217;s failing<\/td>\n<td><strong>Replace<\/strong><\/td>\n<td>NEC prohibits MCCB reconditioning; replacement is the only code-compliant option<\/td>\n<\/tr>\n<tr>\n<td>GFCI or AFCI breaker<\/td>\n<td><strong>Replace<\/strong><\/td>\n<td>NEC 210.15 explicitly prohibits reconditioning of safety devices<\/td>\n<\/tr>\n<tr>\n<td>Power breaker with severe arc damage<\/td>\n<td><strong>Replace<\/strong><\/td>\n<td>Extensive damage may compromise structural integrity; reconditioning cost may exceed replacement<\/td>\n<\/tr>\n<tr>\n<td>Switchgear lineup needing modernization<\/td>\n<td><strong>Recondition breakers + retrofill<\/strong><\/td>\n<td>Extends switchgear life without total replacement; minimizes downtime<\/td>\n<\/tr>\n<tr>\n<td>Emergency system or life-safety circuit<\/td>\n<td><strong>Replace with new<\/strong><\/td>\n<td>Insurance and code requirements may mandate new equipment for critical circuits<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>For help diagnosing whether your breaker actually needs attention, see our guide on <a href=\"https:\/\/huyuglobal.com\/pt\/blog\/how-to-tell-if-a-breaker-is-bad\/\">como saber se um disjuntor est\u00e1 ruim<\/a>. And if replacement is the right call, our article on <a href=\"https:\/\/huyuglobal.com\/pt\/blog\/how-much-to-replace-a-circuit-breaker\/\">how much it costs to replace a circuit breaker<\/a> covers pricing across breaker types and amperage ratings.<\/p>\n<h2>Cost Comparison: Reconditioned vs. New<\/h2>\n<p>When it comes to the reconditioning of circuit breakers, the expenses usually range between 40 and 60% of the total cost of acquiring new equipment. This is especially true for larger models that can help save lots of money:<\/p>\n<table>\n<thead>\n<tr>\n<th>Tipo de Disjuntor<\/th>\n<th>New Cost (Approx.)<\/th>\n<th>Reconditioned Cost (Approx.)<\/th>\n<th>Savings<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>LV power breaker, 800A frame<\/td>\n<td>$8,000\u2013$15,000<\/td>\n<td>$3,200\u2013$9,000<\/td>\n<td>40\u201360%<\/td>\n<\/tr>\n<tr>\n<td>LV power breaker, 3200A frame<\/td>\n<td>$20,000\u2013$40,000<\/td>\n<td>$8,000\u2013$24,000<\/td>\n<td>40\u201360%<\/td>\n<\/tr>\n<tr>\n<td>MV vacuum breaker, 5kV<\/td>\n<td>$15,000\u2013$30,000<\/td>\n<td>$6,000\u2013$18,000<\/td>\n<td>40\u201360%<\/td>\n<\/tr>\n<tr>\n<td>MV vacuum breaker, 15kV<\/td>\n<td>$25,000\u2013$50,000<\/td>\n<td>$10,000\u2013$30,000<\/td>\n<td>40\u201360%<\/td>\n<\/tr>\n<tr>\n<td>Trip unit upgrade (Digitrip\/AC-PRO)<\/td>\n<td>$3,000\u2013$8,000<\/td>\n<td>Included in reconditioning<\/td>\n<td>Bundle savings<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Additional expenses: The reconditioning process saves costs associated with switchgear modification that would be needed in case of changes in size of a new breaker, minimizes lead time since reconditioned breakers arrive in 2-4 weeks in contrast to the new ones that will be delivered in 12-20 weeks, and reduces the downtime due to the fact that the reconditioned breaker can be immediately implemented in the current cubicle.<\/p>\n<h2 id=\"safety\">Safety Considerations &amp; Documentation Requirements<\/h2>\n<p>Reconditioning can be performed only by certified personnel in line with accepted standards. Here are the requirements that need to be checked before installation of a reconditioned circuit breaker:<\/p>\n<ul>\n<li>Labeling: The reconditioned circuit breaker is marked &#8220;Reconditioned&#8221; with the name of the reconditioning company and date.<\/li>\n<li>Test: Get a complete report evidencing &#8220;as received&#8221; and &#8220;final&#8221; test results along with a list of parts replaced.<\/li>\n<li>Certification: In case UL certification is required, verify that the circuit breaker is marked with UL Mark with &#8220;Rebuilt&#8221; or &#8220;Reconditioned.&#8221;<\/li>\n<li>Approval by AHJ: The Authority Having Jurisdiction (electrical inspector) may need proof of reconditioning by a certified company &#8211; stay prepared.<\/li>\n<li>Warranty: Verify the warranty conditions and length (Eaton: 3-year; ABB: 1-year; others vary).<\/li>\n<li>Traceability: The reconditioning company should do recordkeeping linked to the circuit breaker serial number for future reference.<\/li>\n<li>Do not install the reconditioned circuit breaker in the life-safety circuit unless the AHJ and your insurance agent approved the installation.<\/li>\n<\/ul>\n<p>Also, OSHA 29 CFR 1910.334(b)(2) states that once the circuit is de-energized with the protective device it is not allowed to re-energize it manually until it is determined that the equipment and circuit can be safely energized.<\/p>\n<h2>Perguntas Frequentes<\/h2>\n<h3>What is a reconditioned circuit breaker?<\/h3>\n<p>A reconditioned power circuit breaker refers to a power circuit breaker which has undergone a restoration process at a factory-authorized facility. According to the requirements set forth by IEEE C37.59, the entire activity involves an incoming inspection, complete disassembly, cleaning of components, replacement of parts, reapplication of lubricants, reassembly of components according to OEM specifications, and final testing. In addition, the circuit breaker must be labeled as being reconditioned with the name and date of the reconditioning firm, and the original listing had to be taken off due to the NEC requirements.<\/p>\n<h3>What are type B, type C, and type D circuit breakers?<\/h3>\n<p>Types B, C, and D are classifications of MCBs regarding tripping characteristics and not types of circuit breakers classified according to NEC 240.88. Type B circuit breakers trip at three to five times the rated current; these are used in residential applications for circuits with purely resistive loads. After that, we have Type C circuit breakers, which trip at five to ten times the rated current and are used in commercial and industrial electrical systems, as well as circuits with inductive loads, such as fluorescent lights and small motors. The third type is Type D MCBs, which trip at ten to twenty times the rated current and deal with inrush current in transformers, large motors, or welding machines. All the above types of breakers are miniature circuit breakers, molded-cased, and cannot be reconditioned in accordance with NEC 240.88(A)(1).<\/p>\n<h3>Are molded case circuit breakers permitted to be reconditioned?<\/h3>\n<p>Based on the NEC Section 240.88(A)(1) in the year 2020, it is not allowed to refurbish molded- case circuit breakers. MCCBs come as sealed units hence breaking the seals means losing the UL listing and warranty of the manufacturer. Though there is guidance for inspection and preventive maintenance of MCCBs in the NEMA AB 4 guidelines, it is not equal to reconditioning. Routine maintenance is fine but disassembly or modification of the internal structure of the MCCB is not accepted.<\/p>\n<h3>Which type of equipment is not allowed to be reconditioned according to article 210?<\/h3>\n<p>The NEC states under Article 210.15 that there are three kinds of equipment that are not permitted to be reconditioned. These include (1) equipment that supplies personnel with ground-fault circuit interrupting (GFCI) protection, (2) equipment that supplies arc-fault circuit interrupting (AFCI) protection, and (3) equipment that provides ground-fault protection for equipment (GFPE). The reason for these prohibitions is that the devices that are required to be reconditioned are also safety critical devices that possess calibration and sensitivity requirements that cannot be assured even after they are reconditioned. Thus, if any of the reconditioned devices (GFCI, AFCI, or GFPE) fails to trip at the required threshold, then a life hazard will be created. Also, the NEC states that molded circuit breakers cannot be reconditioned by Section 240.88(A)(1) nor can the electronic trip units of low-voltage power circuit breakers be reconditioned according to Section 240.88(B).<\/p>\n<h2>Refer\u00eancias<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.nfpa.org\/codes-and-standards\/nfpa-70-standard-development\/70\" target=\"_blank\" rel=\"nofollow noopener\">NFPA 70 \u2014 National Electrical Code (NEC) 2020, Articles 210.15 and 240.88<\/a><\/li>\n<li><a href=\"https:\/\/www.nema.org\/standards\/view\/guidelines-for-inspection-and-preventive-maintenance-of-molded-case-circuit-breakers-used-in-commercial-and-industrial\" target=\"_blank\" rel=\"nofollow noopener\">ANSI\/NEMA AB 4-2023 \u2014 Guidelines for Inspection and Preventive Maintenance of Molded Case Circuit Breakers<\/a><\/li>\n<li><a href=\"https:\/\/standards.ieee.org\/ieee\/C37.59\/10366\/\" target=\"_blank\" rel=\"nofollow noopener\">IEEE C37.59-2018 \u2014 Standard for Reconditioning Power Switchgear Equipment<\/a><\/li>\n<li><a href=\"https:\/\/www.shopul.com\/product\/ul-489\" target=\"_blank\" rel=\"nofollow noopener\">UL 489 \u2014 Standard for Molded-Case Circuit Breakers, Molded-Case Switches and Circuit Breaker Enclosures<\/a><\/li>\n<li><a href=\"https:\/\/www.ul.com\/news\/reconditioned-electrical-equipment-2020-nec-guide\" target=\"_blank\" rel=\"nofollow noopener\">UL \u2014 Reconditioned Electrical Equipment: A 2020 NEC Guide<\/a><\/li>\n<li><a href=\"https:\/\/www.eaton.com\/us\/en-us\/catalog\/services\/electrical-distribution-services\/class-1-reconditioning.html\" target=\"_blank\" rel=\"nofollow noopener\">Eaton \u2014 Class 1 Circuit Breaker Reconditioning for Low- and Medium-Voltage Power Circuit Breakers<\/a><\/li>\n<li><a href=\"https:\/\/new.abb.com\/service\/service-centers\/breaker-refurbishment-services\" target=\"_blank\" rel=\"nofollow noopener\">ABB \u2014 Service Center Breaker Refurbishment Services<\/a><\/li>\n<li><a href=\"https:\/\/www.se.com\/us\/en\/work\/services\/field-services\/electrical-distribution\/\" target=\"_blank\" rel=\"nofollow noopener\">Schneider Electric \u2014 Electrical Distribution Modernization and Upgrade Solutions<\/a><\/li>\n<li><a href=\"https:\/\/www.pearl1.org\/\" target=\"_blank\" rel=\"nofollow noopener\">PEARL \u2014 Professional Electrical Apparatus Reconditioning League<\/a><\/li>\n<\/ul>\n<p>Reconditionable circuit breakers include low-voltage, medium-voltage, and high-voltage circuit breakers of the draw-out, field-serviceable type that are commonly used in substations and switchgear. The design of the circuit breaker makes use of replaceable contacts, easily accessible mechanism, and interchangeable trip units allowing practical reconditioning in compliance with NEC 240.88. Major manufacturers such as Eaton, ABB, and Schneider Electric offer the reconditioning service according to IEEE C37.59 standards guaranteeing warranties comparable to what new equipment receives.<\/p>\n<p>On the other hand, molded-case circuit breakers, GFCI devices, AFCI devices, and GFPE equipment are unconditionally prohibited from being reconditioned as per NEC 210.15 and 240.88 and must be replaced if broken. The 2020 NEC has made it clear that circuit breakers designed to be maintained may be maintained while sealed safety-critical breakers may not. When opting for reconditioning or replacement, identify the type of circuit breakers first and compare the cost of failure, so you are able to understand what is worth doing more \u2014 reconditioning or replacing the circuit breaker.<\/p>","protected":false},"excerpt":{"rendered":"<p>In case your facility uses outdated switchgears, you may wonder whether you can refurbish your circuit breakers or should obtain brand new gadgets. The answer is not that simple, as it depends on a type of circuit breaker in your facility. As stated by the National Electrical Code (NEC) of 2020, low-voltage power circuit breakers, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3572,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-3571","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/huyuglobal.com\/pt\/wp-json\/wp\/v2\/posts\/3571","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/huyuglobal.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/huyuglobal.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/pt\/wp-json\/wp\/v2\/comments?post=3571"}],"version-history":[{"count":3,"href":"https:\/\/huyuglobal.com\/pt\/wp-json\/wp\/v2\/posts\/3571\/revisions"}],"predecessor-version":[{"id":3579,"href":"https:\/\/huyuglobal.com\/pt\/wp-json\/wp\/v2\/posts\/3571\/revisions\/3579"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/huyuglobal.com\/pt\/wp-json\/wp\/v2\/media\/3572"}],"wp:attachment":[{"href":"https:\/\/huyuglobal.com\/pt\/wp-json\/wp\/v2\/media?parent=3571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/huyuglobal.com\/pt\/wp-json\/wp\/v2\/categories?post=3571"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/huyuglobal.com\/pt\/wp-json\/wp\/v2\/tags?post=3571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}